Speaker



FIG. 1 is a perspective view of a first embodiment of a speaker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a perspective view of a second embodiment of a speaker showing my new design;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a perspective view of a third embodiment of a speaker showing my new design;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a perspective view of a fourth embodiment of a speaker showing my new design; and,

FIG. 8 is a front elevational view thereof.

The broken lines illustrating unclaimed portions of the speaker form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 